Logging-engine



J. S. WILSON.

LOGGING ENGINE. APPLICATION FILED JUNE 5, I9I6.

1,329,870. Patented Feb. 3,1920.

3 SHEETSSHEET 1.

lvwemfoz 31.5. f Wit WM attocwug J. S. WILSON.

LOGGING ENGINE.

APPLICATION FILED JUNE 5, me.

1,329,870, Patented Feb. 3,1920.

3 SHEETS-SHEET 2.

awuemlioz a'ttoweg 1.8. WILSON.

LOGGING ENGINE.

APPLICATION FILED JUNE 5. I916.

1,329,870. Patented W, 1920.

3 SHEETS-SHEET 3.

UNITED STATES PATENT OFFICE.

JOHN s. WILSON, or PORTLAND, OREGON, ASSIGNOR To wILLnMETrn inon & STEELWORKS, or PORTLAND, OREGON, A CORPORATION or OREGON.

LO GGING-ENGINE.

Application filed June 5, 1916.

To all whom it may comer n:

Be it known that I, JOHN S. VVILSOX, a British subject, residing atPortland, in the county of h Iultuomah and State of Oregon, haveinvented new and useful Improvements in Logging-Engines, of which thefollowing is a specification.

This invention relates to logging engines and consists in certainimprovements in the construction thereof as will be hereinafter fullydescribed and pointed out in the claims.

The invention is illustrated in the accompanying drawings as followsFigure .1 shows a side elevation of the engine.

Fig. 2 a plan view of the engine.

Fig. 3 an end View.

Fig. ala sectional view of the clutch actuating mechanism on the line 4:'1 in Fig. 2.

Fig. 5 a plan view of the parts shown in Fig. 1.

The frame is made up of the side beams 1 and 2 and the cross pieces 3,eland 5.

In the engine shown there are three drums which I will designate as thefirst, second and third drums, the second drum being in front of thefirst drum and the third drum in front of the second drum. The thirddrum 6 which is ordinarily used for spotting cars, etc., is mounted on ashaft 7 and the shaft 7 is journaled in bearings 8 on the frame. Thesecond drum 9 is mounted on a shaft 10, the shaft 10 being journaled inbearings 11 on the frame. The drums 6 and 9 are driven from a shaft 12.The shaft 12 is journaled in the bearings 13 on the frame. This shaft 12is a crank shaft, the cranks 14 being arranged at the ends of the shaft.The engines 15 which operate on the cranks 14: are shown in Outline, theengines being double engines, having one cylinder at each side of theframe and set quartering as is the common practice. A gear 16 is fixedon the shaft 12 and meshes a gear 17 mounted 011 the shaft 7. A frictionclutch 18 of common construction is adapted to lock the drum 6 with thegear 17. The clutch 18 is operated by a friction device 20 operating onthe end of the shaft 7 and in the manner co1nmon to clutches and devicesof this kind, one of which is shown in the patent to VVilliam I-I.Corbett, #807,109 Dec. 12, 1905.

Specification of Letters Patent.

Patented Feb. 3, 1920.

Serial Nol 101,882.

One end of the drum has the brake surface 21 on which the brake band 22Operates, the brake band being actuated by a rock lever carried by ashaft 2%. The shaft 2 1 has a rock arm 24-. and the rock arm 2i isconnected by a link with a controlling lever The friction 20 has anoperating lever 27 which is connected by a link 28 with an operatinglever The Operation of the brake and the friction device is well knownand of common construction.

The gear 30 is mounted on the shaft 12 and meshes with a gear 31 on thedrum 9. The gear 30 has the detents operating with the deteu'ts 33completing a jaw clutch. The detents are carried by a collar 35 which islocked against rotation on the shaft 12 by a spline 31. A lever 36operates-on the collar 35 and is fulorumed on a rod 37 extending acrossthe frame. he lever has a yoke 38 with pins 39exte11ding into spiralslots 10 in sleeve 4-1. The sleeve 4L1 is fixed on a shaft -12. A rocklever i3 is mounted on the end of the shaft s2 and is connected by alink et with one ari'n of a bell crank lever, the opposite arm 4C6forming a foot lever by means of which the clutch having the detents 32and 33 may be thrown into engagement. A spring 4:7 releases the clutch.85

It is desirable, the instant the clutch is released, to set the brake onthe drum 9 so as to lock it in position. For this purpose one flange isprovided with a brake surface 418 which is engaged by a brake shoe 19.The brake shoe is car *ied by a link and has a thrust rod 51 extendingto a rock arm 52 on the shaft' 12. When the shaft 42 is rotated torelease the clutch the brake 49 is thrown into engagement and, on theother hand, when the clutch is thrown into engagement the brake isreleased.

The first drum 53 is mounted on a shaft 54 and the shaft 54: isjournaled in the bearings 55 on I beams 56 (see Fig. 3) mounted on thecross pieces 5 between the beams 1 and 2. A drive shaft 57 is journaledin the bearings 58 on the beams 56 and the cranks 59 are arranged on theends of the shaft 57. A gear 60 is fixed on the shaft 57 and meshes agear 61 on the drum 53. The cranks 59 are driven by the engine 62, onecylinder being arranged at each side of the frame. The cylinders arecarried by the brackets 63 on the beams 56 and the cylinders of theengines 15 are carried by brackets 15 extending from the beams 1 and 2.Controlling valves 6% and 65 are arranged, one for each engine, andthese are controlled by the operating levers 66 and 67. The controllinglevers and detail construction of the engine may be as desired and itWill be understood that the proper piping Will be connected with thecontrolling valve and cylinders, at both sides of the engine.

By making the engines on different levels and placing one forward of theother a very compact construction is obtained. It is also desirable tomake the upper cylinders slightly closer together than the lowercylinders so that certain parts of the mechanism will clear. This alsoadds to compactness. 7

These engines are used in different log ging systems but moreparticularly in What is known as high-lead yarding. Here the blocks towhich the cables run are carried to spar trees or other convenientsupports and by making the drums tandem the cables may be more nearlycentralized with the blocks to which the cables run. This is ll11-portant in that the cables will spool more perfectly on the drum. In theuse of the front loadin drum, the second drum in the series, it isdesirable to lock it instantly Whenever the clutch is released otherwiseit might drop the load and result in serious accident. The alternativeclutch and brake device heretofore described accomplishes this purpose.

What I claim as new is 1. In a logging engine, the combination of twodrums, one in front of the other, the rear drum being above the frontdrum; two engines each comprising tWo cylinders arranged in a horizontalplane, the cylinders of one engine being below and in front of thecylinders of the other engine; and driving connections between saidengines and drums.

:2. In a logging engine, the combination of a first, second and thirddrum, the second drum being in front of the first drum and the thirddrum being in front of the second drum, the rear drum being, above thesecond drum and the second drum above the third drum; an engine for thefirst drum comprising two cylinders having their axes in a horizontalplane; a first driving connection between the first drum and the firstengine; a second engine for driving the se ond and third drumscomprising two cylinders having their axes in a horizontal plane, thecylinders of the second engine being in front of and below the cylindersof the first engine; and a second driving connection between the secondengine and the second and third drums.

In testimony whereof I have hereunto set my hand.

J. S. WILSON.

